Charger query

[Chris56]

I currently have a Core UAC-40 charger that is starting to go on the blink. It will only charge at 5A for a few seconds and then cut out. If I charge at 4A it get excessively hot but doesn't cut out.

Im not prepared to take any chances so am going to replace it.

I've narrowed it down to one of the ones below, but was wondering if anybody is using them who could offer me the opinions on them.

I don't need anything fancy, just the ability to charge at 5A and must be mains/12v

http://www.ebay.co.uk/itm/Turnigy-Ac...item5654a210c4

http://www.ebay.co.uk/itm/Genuine-Or...item53f4ebdc80

http://www.giantshark.co.uk/power-a6...-p-405325.html

http://www.modelsport.co.uk/ansmann-...products/38399